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ADO.net question?

I am fairly new to ASP.net having started with version 2. I have mostly used
the DataSource controls for manipulating data but i now need to some data
using ADO.net instead and a stored procedure in the SQL server database. As
far as i can work out, in order to insert a new row using ADO.net i need to
retreive the data base table into a datatable object, insert the row into the
DataTable and then run the update method of the DataAdapter object. So long
as i have a suitable DataCommand object and associated parameters set to the
InsertCommand property of the DataAdapter object then is will do the
business. This seems a very inefficient way to add a row to a table, it is
for an order entry system there are liekly to be hundreds of orders a day
entered. I don't want to have to read the whole orders table from the
database in order to just add a new record, so:

Is there a way to do this the doesn't involve me having to read anything
into a DataTable object, i.e. can i just create one with the relvent fields
etc and then add one row to it and then propagate this back to the DB in the
same way i would if i filled it from the DB.

If not would there be any problems with reading a very small subset of the
table into a datatable object and then using this to update the database
table, in other words will this delete all ther records in the database that
are not in the DataTable object.
Apr 25 '06 #1
1 1110
The DataTable is used when you need to fetch data and use it, and/or update
it or modify the contents of the underlying table. If all you need to do is
insert a record without seeing any of the other records, you can simply use
a Connection, Command, and a Stored Procedure or Query.

--
HTH,

Kevin Spencer
Microsoft MVP
Professional Numbskull

Hard work is a medication for which
there is no placebo.

"clickon" <cl*****@discussions.microsoft.com> wrote in message
news:6B**********************************@microsof t.com...
I am fairly new to ASP.net having started with version 2. I have mostly
used
the DataSource controls for manipulating data but i now need to some data
using ADO.net instead and a stored procedure in the SQL server database.
As
far as i can work out, in order to insert a new row using ADO.net i need
to
retreive the data base table into a datatable object, insert the row into
the
DataTable and then run the update method of the DataAdapter object. So
long
as i have a suitable DataCommand object and associated parameters set to
the
InsertCommand property of the DataAdapter object then is will do the
business. This seems a very inefficient way to add a row to a table, it
is
for an order entry system there are liekly to be hundreds of orders a day
entered. I don't want to have to read the whole orders table from the
database in order to just add a new record, so:

Is there a way to do this the doesn't involve me having to read anything
into a DataTable object, i.e. can i just create one with the relvent
fields
etc and then add one row to it and then propagate this back to the DB in
the
same way i would if i filled it from the DB.

If not would there be any problems with reading a very small subset of the
table into a datatable object and then using this to update the database
table, in other words will this delete all ther records in the database
that
are not in the DataTable object.

Apr 25 '06 #2

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